package chapter4.e1;
class Animal {
    private  String name;
    private int age;
    public String getName(){
        return name;
    }
    public void  setName (String name){
        this.name=name;
    }
    public int getAge(){
        return age;
    }
    public void setAge (int age){
        this.age=age;
    }
}
class Dog extends Animal{

}
public class Example1 {
    public static void  main (String [] args){
        Dog dog = new Dog();
        dog.setName("牧羊犬");
        dog.setAge(3);
        System.out.println("名称:"+dog.getName()+",年龄:"+dog.getAge());
    }
}
